Quote:
| Originally Posted by nelly Only added after reading the first page, but now read it all  Frank brings up an interesting point.... If the big ends failed, would a crank regrind and oversize shells be illegal?? The rules, if followed to the letter, would indicate so. Surely common sense would prevail?? There's a distinct line between balancing and lightening. I think the point made about "good practice" in building a good motor is well made. There's no performance benefit and policing it is nigh impossible. |
With regard to possibly regrinding a crank after a blow up (how much would this cost against sourcing another crank) then surely the course of action would be to email the RC and seek permission to get it done.
Not unlike Paynep emailing and asking about using a different frame.
I agree that balancing a engine is good practice and to some extent this is carried out at the factory, but as the Desmo Due rules not only state no Modifications to the crankshaft but also that it should remain as it left the factory there are quite a few entrants out there that have followed the rules.
For example Senna3 had his engine rebuilt at Baines Racing last year including the fitting of two new pistons, Now I wouldn't dare suggest Geoff or John don't know how to assemble a Ducati engine be it air-cooled or water-cooled but they did not adjust/alter/modify the crank as they were asked to make sure it complied with the rules.
Surely it is one rule for all
Nelly I'm not sure how many Desmo Due engines you have built from the crankcases upwards, maybe none. But if you have, have you always applied best practice or have you left the crank well alone inline with the rules